Expansible chamber devices – Passage in cylinder for application of separate fluid to...
Patent
1971-10-14
1977-05-24
Cohen, Irwin C.
Expansible chamber devices
Passage in cylinder for application of separate fluid to...
92144, 92176, 92215, F16j 100, F16l 5900
Patent
active
040248011
ABSTRACT:
This invention relates to reciprocating piston engines using single acting pistons operating in liquid cooled and lubricated cylinders, said pistons have piston extensions slightly smaller in diameter than the main power pistons and the length of the stroke, operating inside slightly larger, insulated, hot cylinder extensions. Operating in co-operation with a cold air blocking system which fills the clearance space between the piston extension and the hot cylinder wall liner with cool air when the piston is at or near top dead center. Thus keeping the hot pressure fluid medium from coming in contact with the liquid cooled and lubricated cylinder walls in which the main power piston operates. Thereby cutting down the heat losses to the cooling medium.
This invention relates to novel methods of securing the hot piston extension to the main power piston in a way that allows for the difference in expansion from the heat of the hot pressure fluid medium, and still holds the piston extension firmly secured and centered radially with the main piston at all temperatures. Insulation is provided between the main piston and piston extension.
REFERENCES:
patent: 1156590 (1915-10-01), Davol
patent: 1190830 (1916-07-01), Wentworth
patent: 1557987 (1925-10-01), Coryell
patent: 2359672 (1944-10-01), Penco
patent: 3136306 (1964-06-01), Kamm
patent: 3187643 (1965-06-01), Pope
patent: 3623463 (1971-11-01), DeVries
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